Bright and durable scintillation from colloidal quantum shells

Burak Guzelturk (), Benjamin T. Diroll (), James P. Cassidy, Dulanjan Harankahage, Muchuan Hua, Xiao-Min Lin, Vasudevan Iyer, Richard D. Schaller, Benjamin J. Lawrie and Mikhail Zamkov ()
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Burak Guzelturk: Argonne National Laboratory
Benjamin T. Diroll: Argonne National Laboratory
James P. Cassidy: Bowling Green State University
Dulanjan Harankahage: Bowling Green State University
Muchuan Hua: Argonne National Laboratory
Xiao-Min Lin: Argonne National Laboratory
Vasudevan Iyer: Oak Ridge National Laboratory
Richard D. Schaller: Argonne National Laboratory
Benjamin J. Lawrie: Oak Ridge National Laboratory
Mikhail Zamkov: Bowling Green State University

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Efficient, fast, and robust scintillators for ionizing radiation detection are crucial in various fields, including medical diagnostics, defense, and particle physics. However, traditional scintillator technologies face challenges in simultaneously achieving optimal performance and high-speed operation. Herein we introduce colloidal quantum shell heterostructures as X-ray and electron scintillators, combining efficiency, speed, and durability. Quantum shells exhibit light yields up to 70,000 photons MeV−1 at room temperature, enabled by their high multiexciton radiative efficiency thanks to long Auger-Meitner lifetimes (>10 ns). Radioluminescence is fast, with lifetimes of 2.5 ns and sub-100 ps rise times. Additionally, quantum shells do not exhibit afterglow and maintain stable scintillation even under high X-ray doses (>109 Gy). Furthermore, we showcase quantum shells for X-ray imaging achieving a spatial resolution as high as 28 line pairs per millimeter. Overall, efficient, fast, and durable scintillation make quantum shells appealing in applications ranging from ultrafast radiation detection to high-resolution imaging.

Date: 2024
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DOI: 10.1038/s41467-024-48351-9

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